Island



(No Model.)

J. F. GARR.

INGUBATOR.

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UNiTED STATES u PATENT OFFICE.

JOHN F. CARR, F I`IVER1ON, RHODE ISLAND.

INCUBATOR.

SPECIFICATION forming part of Letters Patent No. 395,483, dated January 1, 1889.

Application tiled September 8, 1887. Serial No. 249,086. (No model.)

To all'wiom, it may concern:

Be it known that l, JOHN F. ARR, oi' Tiverton, in the county of Newport, State of Rhode Island, have invented a certain new and useful Improvement in Incubators, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and` use the same, reference being had to the accompanying drawings, forming part of this specilication, in which Figure l is a vertical longitudinal section of my improved inculiiator, taken on line lr in Fig. 2; Fig. 2, a horizontal sect-ion taken on line `y fj in Fig. l, and Fig. 3 a vertical transverse section taken on line in Fig. 2.

Like letters and iigures of reference indicate corresponding parts in the different tigurcs of the drawings. y

My present invention is designed as animprovement on the incubator shown and described in Letters Patent No. 364,073, dated May Si., 1887; and it consists in a novel construction and arrangement of parts, as hereinafter more li'ully setI forth and claimed, the object being to produce a simpler and more effective device oi? this character than is now in ordinary use.

The nature and operation ot'nthe improvement will be readily understood by all conversant with such 'matt ers without a more eX- pl ici t description.

ln the drawings, A represents 'the body or ease, which is provided with the usual airspaces or insulating-chambers, ym.

A n-shaped boiler is disposed in one end of the body and provided at the top with a series of @duction-pipes, C, and at the bottom with imluctifjm-pipes ll, through which the water circulates. A smoke-pi pe, l), leads from the uppcr portion of the boiler directly through thel side walls thereof, said pipe extcmling longitmlinally along the body A above the pipes (Y) and opening into the 'lue N, connecting wit-h thc chimney E. Vertically-arranged pipes 1' connect the eductionpipes (l with the iluluction or return pipes ll. A pendent partition, F, is sccurod to the inner side-oli' the top at the rear of the body A, i and extends to within a short distance oil the bottoni ot said body, forming with the end l wall of the body the flue N for the chimney E. The boiler B is inclosed in a chamber formed of the transversely-arranged partitions g, g', and 40, the partition g extending to within a short distance ot' the top of the body A. A partition, 7i, arranged in the same manner as the partition F, is disposed near the partition g', and forms with it a flue or conduit for conducting the hot air from the boiler-chamber into the bottom of the body and under the pipes H, so that it will circulate t'reely among the eggs.

An evaporating-pan, M, is disposed on thc pipes C, and is provided with a slidin cover, d, by which the amount of vapor or moisture allowed to escape from said pan maybe regulated. A vertical pipe, l, is connected with one of the pipes C and extends horizontally through the tops of the partitions h g and into a chamber, ZU', formed by the partition g and the end wall of the body. A hollow inetallic ball, G, disposed within the chamber 7.1, and is pivoted by means of aball-and-socket joint, i, to the partition g, said ball beingconnected with the pipe li by means of a nipple (not shown) and a fiexible tube, p. (See Figs. l and 23.)

Secured to one side ol.' the ball G there is a horizontally-arranged rod, q, to the outer end of which is pivoted a rod, r, provided. with a counterlialaneilig-weight, i.A (See Fig. 3.) A horizontally-arrangml metallic tube, in, enters the ball G on the side opposite the rod q and is provided at its outer end with a cup, b, to which is secured a vertically-arran ged rod, J. A lamp, L, is disposed on a vertically-adjustable stand beneath the boiler B in such a position that the hot air and products ot combustion trom its chimney will pass up into the chamber i'ori ned bythe sides of the boiler, and thence through the pipe D into the flue N of the chimneyE. A horizontally-arranged lever 'i is )ivot'ed in an arm d on the lam :i y 7 9 7 L, the outer end of said lever being jointed to the lower end ot' the rod J, and its inner end connected with a sleeve, 2l, whiclli is iitted to slide vertically on the wick-tube of the lamp in the usual manner. The front of the body is provided with doors 25, through which the drawers or racks containing the eggs may be passed.

In the use of our improvement, the lamp L IOO , of the lamp increased.

being lighted and adjusted under the boiler B by means ol' the stand f, lthe water in the boiler will be heated and pass through the eduction-tubes C down through the tubes r, and thence through the return-tubes ll into the boiler again to be reheated. lu case the water in the boiler becomes too hot or the heat in the incubator too great, the water will be forced through the pipes K p into the ball G, and thence through the pipe u" into the cup Z1.

lt'will be obvious that when the temperature rises and a sufficient quantity of water is forced into the ball G and trom thence into the cup b to depress said cup, the rod .l secured thereto will be :f orced downward accordingly, thereby depressing the outer end of the lever f1,torcing the sleeve 2l upward over the wick-tube, and reducing the Haine of the lamp .in a manner which 'will be readily obvious without a more explicit description. The temperature ot' the water in the boiler being thus reduced, the water in the cup b will'How back into the ball g, thereby permitting the cup and lever L to be raised by the counter-balance or weight the sleeve 2l being at the same time depressed andthe Hame It will be therefore seen that the temperature ot' the water in the boiler and pipes is regulated automatically. By the use o1 the ball-and-soclwt joint l as a fulerum for the lever formed by the ball G, tube w, and rod q the friction is reduced, and by means of the counter-balance or weight 'f the cup b is raised and the sleeve 2l depressed the temperature ot the water in the boiler falls.

lt is generally understood that the atlnos- The pipe K maybe inserted directly into.

theboiler Vinstead ot' into the pipes @,Lif desired.

I'laving thus explained my invention, what l claim l. The combination of an egg-chamber having end walls provided with openings near their lower ends, a hot-air chamber at one end of the egg-chamber, a heating device in the hot-air chamber, an d a partition-wall between the wall of the egg-chamber and the heating device, said partition-wall extendingl i'iearly io the top of the hot-ai r chamber.

2. The combination of an egg-chamber, a hot-air chamber, a heating device within the hot-air chamber, and a conduit open at its upper end to communicate with the hot-air chamber, and also open at 'its lower end to communicate with the egg-chamber, whereby a coi'itinuous supply of hot air may be conveyed from the hot-air chamber to the eggchamber, substantially as and for the purpose set forth.

JOHN F. CARR. lVitnesses:

O. M. SHAW, E. J. JORDAN. 

